13. Rotational Inertia & Energy
Moment of Inertia of Systems
13. Rotational Inertia & Energy Moment of Inertia of Systems
1PRACTICE PROBLEM
Coins can be treated as discs. A dummy coin has an inner uniform solid disc with a diameter of 120.0 cm and an area density of 4.00 g/cm2, which is encircled by a concentric ring with inner and outer diameters of 120.0 cm and 160.0 cm and an area density of 2.50 g/cm2. Find the coin's moment of inertia around an axis that passes through its center and is perpendicular to its plane.
Coins can be treated as discs. A dummy coin has an inner uniform solid disc with a diameter of 120.0 cm and an area density of 4.00 g/cm2, which is encircled by a concentric ring with inner and outer diameters of 120.0 cm and 160.0 cm and an area density of 2.50 g/cm2. Find the coin's moment of inertia around an axis that passes through its center and is perpendicular to its plane.